Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882260 | Positive-working photosensitive quinone diazide composition with alkali insoluble dye and alkali soluble dye | Hidekatsu Kohara, Masanori Miyabe, Toshimasa Nakayama, Shingo Asaumi, Hatsuyuki Tanaka +1 more | 1989-11-21 |